A heap-based buffer overflow in Binary diff might allow remote attackers to execute arbitrary code.
|Package||dev-util/bsdiff on all architectures|
|Affected versions||< 4.3-r4|
|Unaffected versions||>= 4.3-r4|
bsdiff and bspatch are tools for building and applying patches to binary files.
It was discovered that the implementation of bspatch did not check for a negative value on numbers of bytes read from the diff and extra streams.
A remote attacker could entice a user to apply a specially crafted patch using bspatch, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.
There is no known workaround at this time.
All Binary diff users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=dev-util/bsdiff-4.3-r4"
March 19, 2020
March 19, 2020: 1